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arXiv 0811.2739quant-ph
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独立单光子的不可逆性

Indistinguishability of independent single photons

F. W. Sun, C. W. Wong

摘要:

通过将单光子脉冲分解为不同变换极限脉冲的混合态,给出了独立单光子的不可逆性。单光子与外界环境或其他光子之间的纠缠导致了变换受限脉冲中心频率的分布,使光子可分辨。只有具有相同变换极限形式的单光子是不可区分的。详细地,利用双光子Hong-Ou-Mandel干涉仪研究了来自固态量子发射极的单光子的不可区分性和自发参量下转换。此外,实验方法,以提高抗干扰性进行了讨论,其中光谱滤波器的使用突出。

英文摘要:

The indistinguishability of independent single photons is presented by decomposing the single photon pulse into the mixed state of different transform limited pulses. The entanglement between single photons and outer environment or other photons induces the distribution of the center frequencies of those transform limited pulses and makes photons distinguishable. Only the single photons with the same transform limited form are indistinguishable. In details, the indistinguishability of single photons from the solid-state quantum emitter and spontaneous parametric down conversion is examined with two-photon Hong-Ou-Mandel interferometer. Moreover, experimental methods to enhance the indistinguishability are discussed, where the usage of spectral filter is highlighted.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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